Tunku Muhammad Nizar Tunku Mansur
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Preferred name
Tunku Muhammad Nizar Tunku Mansur
Official Name
Tunku Muhammad Nizar, Tunku Mansur
Alternative Name
Nizar, T. M.
Mansur, T. M.N.Tunku
Mansur, T. M.N.T.
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Scopus Author ID
55140897300

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Framework design of an off-grid remote 3-bedroom house using solar DC power system

2024 , Tunku Muhammad Nizar Tunku Mansur

The utilization of renewable energy power systems is currently gaining widespread popularity with the increase of energy demand and concerns on the carbon dioxide emission to the environment that will cause global warming. Malaysia has move forward by promoting used of renewable energy such as solar PV to the public where it generated locally at a distribution voltage level. Presently there is growing interest in employing DC as a means of delivering power to the load due to its numerous advantages in comparison to AC. Furthermore, since the electricity generated by a solar PV system is in DC, the totally DC system will contribute to the overall simplicity of the system design. Nevertheless, literature reviews reveal that there is a broad variety of design approaches and assumptions employed in various research studies, resulting in significant variability. In addition, numerous approaches have been identified in economic analysis. Therefore, it is crucial to develop a uniform set of design principles and procedures, together with an economic structure, for the design aspects of DC system. Therefore, the objective of this study is to improve the framework design of an off-grid solar PV system house using solar DC power system to achieve the 100% renewable energy fraction and fulfilling the annual load demand. The load will be a 3-bedroom residential house that consumed within the smallest energy consumption band which is 200 kWh per month. The processes involved are project site selection, residential load profiling, design calculation, verification of the designed system through PVsyst and Homer simulation for technical and economic performance and lastly prototype development. The design process for a technical aspect has been performed by deploying design calculations, which were subsequently validated through the use of PVsyst simulation. Then, a techno-economic analysis of a solar PV power system was conducted utilizing the Homer Pro software. Finally, the procedure of designing and developing a prototype known as the DC power module for the purpose of distributing energy to a fully DC-powered residential building. Based on the results obtained, both methods which are design calculations and have PVsyst simulation exhibited nearly identical results hence it can be concluded that both methodologies are feasible in ascertaining the most effective configuration for a solar PV power system. For the techno-economic analysis utilizing Homer Pro software, the solar PV DC system demonstrates lower initial cost and LCOE compared to the solar PV AC system. However, in terms of LCOE value, is comparatively higher when compared with the grid tariff rate to users consuming 200 kWh. In addition, DC power module has been successfully designed and developed for distribution of DC power to a fully DC residential. This prototype can provide electricity to both high-power and low-power loads using both of its 48 V DC and 12 V DC output with the maximum power nearly 1,600 W. Lastly, in terms of environment, this design set-up is expected to benefit the residential consumers in reducing utility electricity consumption up to 2,434 kWh per year which is equivalent to almost 1.7 tons of carbon emissions avoidance into the environment annually.

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Optimal sizing and economic analysis of self-consumed solar PV system for a fully DC residential house

2017-07-02 , Tunku Muhammad Nizar Tunku Mansur , Nor Hanisah Baharudin , Rosnazri Ali

The fluctuation offuel prices has become concern to the Malaysian since it will influence the electricity tariff. The objective of this paper is to design a self-consumed DC power system for a residential house from renewable energy resource which is solar PV that will be independent from the utility grid. The methodology proposed are configuring daily load demand, sizing PV array, battery bank and lastly simulation and optimization of the system through HOMER software. Based on HOMER simulation, the optimum PV array size is 3.5 kW while the 48 V battery bank needs 32 units of 12 V batteries, which is designated for 3 days of autonomy. The system could meet 100% of load demand throughout the year with 37.08 % of excess energy. The consumers can benefit of reducing utility electricity bills up to 2,434 kWh annually and to the environmental aspect, will avoid 1. 7 tons of CO2 releases into the atmosphere.

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Performance analysis of self-consumed solar PV system for a fully DC residential house

2017-11-01 , Tunku Muhammad Nizar Tunku Mansur , Nor Hanisah Baharudin , Rosnazri Ali

Malaysia is moving forward by promoting used of renewable energy such as solar PV to the public where it is generated at the distribution voltage level. The fluctuation of fuel prices becomes main concern to the consumers since it affecting the electricity tariff. The objective of this project is to design a self-consumed DC power system for a residential house from renewable energy resource which is solar PV that it will independent from the utility grid. The methodology proposed are configuring daily load demand, sizing PV array and battery bank and simulation of the design system by using PVsyst. Based on solar energy resource, the optimum PV array size is 2.0 kWp while the battery bank size is 700 Ah at 48 V which is designated for 4 days of autonomy. The system could meet 100% of load demand throughout the year with 67.9% of performance ratio. The loss to the system is contributed by the temperature effect to the PV module, unused energy because of battery full capacity, converter and battery efficiencies. Using this concept, the proposed design set-up is expected to benefit the residential consumers in reducing utility electricity consumption up to 2,434 kWh per year and avoiding 1.7 tons of carbon emissions into the environment annually.

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